Patent · US Expired

Zinc-based alloys with improved ductility

US4609529A · kind A · utility

4Cited by

1References

9Claims

0Family size

Assignee

CENTRE DE RECHERCHES METALLURGIQUES ASBL · BE

Inventors

Andre Skenazi · Steenokkerzeel, BE
Dimitri Coutsouradis · Liège, BE
Andre Rasquin · Saive, BE

Key dates

Filing date	Oct 11, 1984
Grant date	Sep 2, 1986
Priority date	—
Expiry date	Oct 11, 2004

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C18/04
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The ductility and/or tensile strength of certain zinc-based alloys (25 to 40 wt. % aluminum, 0.5 to 5 wt. % copper, and up to 0.1 wt. % magnesium) are improved when various elements are added. A first series of improved alloys is comprised of boron (between 5 ppm and 0.1 wt. %), possibly along with titanium (25 ppm to 0.5 wt. %), or possibly along with zirconium and/or strontium (up to 0.1 wt. %), and titanium (up to 0.1 wt. %). A second series of improved alloys is comprised of rare earths, principally lanthanum and/or cerium, in a total amount between 5 ppm and 0.1 wt. %.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.